238 struct  fs {  struct
239 	uint32_t fs_link;		/* linked list of file systems */  argument
240 	uint32_t fs_rolled;		/* logging only: fs fully rolled */  argument
241 	daddr32_t fs_sblkno;		/* addr of super-block in filesys */  argument
242 	daddr32_t fs_cblkno;		/* offset of cyl-block in filesys */  argument
243 	daddr32_t fs_iblkno;		/* offset of inode-blocks in filesys */  argument
244 	daddr32_t fs_dblkno;		/* offset of first data after cg */  argument
245 	int32_t	fs_cgoffset;		/* cylinder group offset in cylinder */  argument
246 	int32_t	fs_cgmask;		/* used to calc mod fs_ntrak */  argument
247 	time32_t fs_time;		/* last time written */  argument
248 	int32_t	fs_size;		/* number of blocks in fs */  argument
249 	int32_t	fs_dsize;		/* number of data blocks in fs */  argument
250 	int32_t	fs_ncg;			/* number of cylinder groups */  argument
251 	int32_t	fs_bsize;		/* size of basic blocks in fs */  argument
252 	int32_t	fs_fsize;		/* size of frag blocks in fs */  argument
253 	int32_t	fs_frag;		/* number of frags in a block in fs */  argument
255 	int32_t	fs_minfree;		/* minimum percentage of free blocks */  argument
256 	int32_t	fs_rotdelay;		/* num of ms for optimal next block */  argument
257 	int32_t	fs_rps;			/* disk revolutions per second */  argument
259 	int32_t	fs_bmask;		/* ``blkoff'' calc of blk offsets */  argument
260 	int32_t	fs_fmask;		/* ``fragoff'' calc of frag offsets */  argument
261 	int32_t	fs_bshift;		/* ``lblkno'' calc of logical blkno */  argument
262 	int32_t	fs_fshift;		/* ``numfrags'' calc number of frags */  argument
264 	int32_t	fs_maxcontig;		/* max number of contiguous blks */  argument
265 	int32_t	fs_maxbpg;		/* max number of blks per cyl group */  argument
267 	int32_t	fs_fragshift;		/* block to frag shift */  argument
268 	int32_t	fs_fsbtodb;		/* fsbtodb and dbtofsb shift constant */  argument
269 	int32_t	fs_sbsize;		/* actual size of super block */  argument
270 	int32_t	fs_csmask;		/* csum block offset */  argument
271 	int32_t	fs_csshift;		/* csum block number */  argument
272 	int32_t	fs_nindir;		/* value of NINDIR */  argument
273 	int32_t	fs_inopb;		/* value of INOPB */  argument
274 	int32_t	fs_nspf;		/* value of NSPF */  argument
276 	int32_t	fs_optim;		/* optimization preference, see below */  argument
292 	int32_t	fs_state;		/* file system state time stamp */  argument
294 	int32_t	fs_npsect;		/* # sectors/track including spares */  argument
296 	int32_t fs_si;			/* summary info state - lufs only */  argument
297 	int32_t	fs_trackskew;		/* sector 0 skew, per track */  argument
302 	int32_t	fs_id[2];		/* file system id */  argument
304 	daddr32_t fs_csaddr;		/* blk addr of cyl grp summary area */  argument
305 	int32_t	fs_cssize;		/* size of cyl grp summary area */  argument
306 	int32_t	fs_cgsize;		/* cylinder group size */  argument
308 	int32_t	fs_ntrak;		/* tracks per cylinder */  argument
309 	int32_t	fs_nsect;		/* sectors per track */  argument
310 	int32_t	fs_spc;			/* sectors per cylinder */  argument
312 	int32_t	fs_ncyl;		/* cylinders in file system */  argument
314 	int32_t	fs_cpg;			/* cylinders per group */  argument
315 	int32_t	fs_ipg;			/* inodes per group */  argument
316 	int32_t	fs_fpg;			/* blocks per group * fs_frag */  argument
318 	struct	csum fs_cstotal;	/* cylinder summary information */  argument
320 	char	fs_fmod;		/* super block modified flag */  argument
321 	char	fs_clean;		/* file system state flag */  argument
322 	char	fs_ronly;		/* mounted read-only flag */  argument
323 	char	fs_flags;		/* largefiles flag, etc. */  argument
324 	char	fs_fsmnt[MAXMNTLEN];	/* name mounted on */  argument
326 	int32_t	fs_cgrotor;		/* last cg searched */  argument
333 	union { 			/* fs_cs (csum) info */  argument
336 	} fs_u;  argument
337 	int32_t	fs_cpc;			/* cyl per cycle in postbl */  argument
338 	short	fs_opostbl[16][8];	/* old rotation block list head */  argument
339 	int32_t	fs_sparecon[51];	/* reserved for future constants */  argument
340 	int32_t fs_version;		/* minor version of ufs */  argument
341 	int32_t	fs_logbno;		/* block # of embedded log */  argument
342 	int32_t fs_reclaim;		/* reclaim open, deleted files */  argument
343 	int32_t	fs_sparecon2;		/* reserved for future constant */  argument
346 	int32_t	fs_npsect;		/* # sectors/track including spares */  argument
348 	int32_t	fs_state;		/* file system state time stamp */  argument
350 	quad_t	fs_qbmask;		/* ~fs_bmask - for use with quad size */  argument
351 	quad_t	fs_qfmask;		/* ~fs_fmask - for use with quad size */  argument
352 	int32_t	fs_postblformat;	/* format of positional layout tables */  argument
353 	int32_t	fs_nrpos;		/* number of rotaional positions */  argument
354 	int32_t	fs_postbloff;		/* (short) rotation block list head */  argument
355 	int32_t	fs_rotbloff;		/* (uchar_t) blocks for each rotation */  argument
356 	int32_t	fs_magic;		/* magic number */  argument
357 	uchar_t	fs_space[1];		/* list of blocks for each rotation */  argument
408 #define	fs_postbl(fs, cylno) \  argument
416 #define	fs_rotbl(fs) \  argument
428 #define	fs_cs(fs, indx) fs_u.fs_csp[(indx)]  argument
476 #define	cg_blks(fs, cgp, cylno) \  argument
529 #define	fsbtodb(fs, b)	(((daddr_t)(b)) << (fs)->fs_fsbtodb)  argument
531 #define	fsbtodb(fs, b)	(((diskaddr_t)(b)) << (fs)->fs_fsbtodb)  argument
534 #define	dbtofsb(fs, b)	((b) >> (fs)->fs_fsbtodb)  argument
544 #define	logbtodb(fs, b)	((fs)->fs_magic == FS_MAGIC ? \  argument
547 #define	logbtodb(fs, b)	((fs)->fs_magic == FS_MAGIC ? \  argument
550 #define	logbtofrag(fs, b)	((fs)->fs_magic == FS_MAGIC ? \  argument
552 #define	logbtofsblk(fs, b) ((fs)->fs_magic == FS_MAGIC ? \  argument
560 #define	cgbase(fs, c)	((daddr32_t)((fs)->fs_fpg * (c)))  argument
562 #define	cgstart(fs, c) \  argument
565 #define	cgsblock(fs, c)	(cgstart(fs, c) + (fs)->fs_sblkno)	/* super blk */  argument
567 #define	cgtod(fs, c)	(cgstart(fs, c) + (fs)->fs_cblkno)	/* cg block */  argument
569 #define	cgimin(fs, c)	(cgstart(fs, c) + (fs)->fs_iblkno)	/* inode blk */  argument
571 #define	cgdmin(fs, c)	(cgstart(fs, c) + (fs)->fs_dblkno)	/* 1st data */  argument
579 #define	itoo(fs, x)	((x) % (uint32_t)INOPB(fs))  argument
581 #define	itog(fs, x)	((x) / (uint32_t)(fs)->fs_ipg)  argument
583 #define	itod(fs, x) \  argument
591 #define	dtog(fs, d)	((d) / (fs)->fs_fpg)  argument
592 #define	dtogd(fs, d)	((d) % (fs)->fs_fpg)  argument
598 #define	blkmap(fs, map, loc) \  argument
602 #define	cbtocylno(fs, bno) \  argument
611 #define	cbtorpos(fs, bno) \  argument
629 #define	blkoff(fs, loc)		/* calculates (loc % fs->fs_bsize) */ \  argument
636 #define	fragoff(fs, loc)	/* calculates (loc % fs->fs_fsize) */ \  argument
645 #define	lblkno(fs, loc)		/* calculates (loc / fs->fs_bsize) */ \  argument
652 #define	numfrags(fs, loc)	/* calculates (loc / fs->fs_fsize) */ \  argument
663 #define	blkroundup(fs, size)	/* calculates roundup(size, fs->fs_bsize) */ \  argument
670 #define	fragroundup(fs, size)	/* calculates roundup(size, fs->fs_fsize) */ \  argument
677 #define	fragstoblks(fs, frags)	/* calculates (frags / fs->fs_frag) */ \  argument
680 #define	blkstofrags(fs, blks)	/* calculates (blks * fs->fs_frag) */ \  argument
683 #define	fragnum(fs, fsb)	/* calculates (fsb % fs->fs_frag) */ \  argument
686 #define	blknum(fs, fsb)		/* calculates rounddown(fsb, fs->fs_frag) */ \  argument
693 #define	freespace(fs, ufsvfsp) \  argument
701 #define	blksize(fs, ip, lbn) \  argument
707 #define	dblksize(fs, dip, lbn) \  argument
716 #define	NSPB(fs)	((fs)->fs_nspf << (fs)->fs_fragshift)  argument
717 #define	NSPF(fs)	((fs)->fs_nspf)  argument
722 #define	INOPB(fs)	((fs)->fs_inopb)  argument
723 #define	INOPF(fs)	((fs)->fs_inopb >> (fs)->fs_fragshift)  argument
728 #define	NINDIR(fs)	((fs)->fs_nindir)  argument